Backtrace

BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0 
Oops: 0000 [#1] SMP NOPTI
CPU: 1 PID: 8 Comm: kworker/u32:0 Tainted: P           OE     5.14.10-300.fc35.x86_64 #1
Hardware name: ASUSTeK COMPUTER INC. ROG Zephyrus M16 GU603HM_GU603HM/GU603HM, BIOS GU603HM.315 12/09/2021
Workqueue: netns cleanup_net
RIP: 0010:igmp6_group_dropped+0x24/0x230
Code: 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 41 55 41 54 53 48 83 ec 28 65 48 8b 04 25 28 00 00 00 48 89 44 24 20 48 8b 47 10 <4c> 8b 20 f6 47 01 0e 74 32 8b 87 a0 00 00 00 48 89 fb a8 04 75 44
RSP: 0018:ffffb5f98010fb60 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff91230cec9000 RCX: 0000000000000000
RDX: ffff912313efd000 RSI: ffffb5f98010fb60 RDI: ffff91230cec9000
RBP: ffffb5f98010fba0 R08: ffffb5f98010fb60 R09: ffff912338cf37d8
R10: 0000000000000000 R11: 0000000000000001 R12: ffff91230803ae40
R13: ffff91230803ab40 R14: ffff91230803ac00 R15: ffff91233683b624
FS:  0000000000000000(0000) GS:ffff91267b440000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000029ce10002 CR4: 0000000000770ee0
PKRU: 55555554
Call Trace:
 ? kvfree_call_rcu+0x75/0x2c0
 ipv6_mc_down+0x2c/0x190
 addrconf_ifdown.isra.0+0x4f8/0x6d0
 ? call_rcu+0xcb/0x620
 addrconf_notify+0x7e/0xb60
 ? skb_dequeue+0x6d/0x80
 ? __neigh_ifdown.isra.0+0xf5/0x120
 ? raw_notifier_call_chain+0x41/0x60
 raw_notifier_call_chain+0x41/0x60
 dev_close_many+0xd9/0x110
 unregister_netdevice_many+0x148/0x700
 ? rtnl_is_locked+0x11/0x20
 ? unregister_netdevice_queue+0x58/0xf0
 default_device_exit_batch+0x131/0x150
 ? init_wait_entry+0x30/0x30
 cleanup_net+0x1ff/0x350
 process_one_work+0x1e9/0x390
 worker_thread+0x53/0x3e0
 ? process_one_work+0x390/0x390
 kthread+0x124/0x150
 ? set_kthread_struct+0x40/0x40
 ret_from_fork+0x1f/0x30
Modules linked in: rfcomm snd_seq_dummy snd_hrtimer xt_REDIRECT xt_mark xt_conntrack xt_MASQUERADE nf_conntrack_netlink nft_counter xt_addrtype nft_compat br_netfilter bridge stp llc nft_objref nf_conntrack_netbios_ns nf_conntrack_broadcast nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack xt_TPROXY nf_tproxy_ipv6 nf_tproxy_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 overlay ip_set nf_tables nfnetlink qrtr ns bnep sunrpc vfat fat squashfs loop btusb btrtl btbcm btintel bluetooth uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common videodev ecdh_generic mc snd_sof_pci_intel_tgl snd_sof_intel_hda_common soundwire_intel soundwire_generic_allocation soundwire_cadence snd_sof_intel_hda snd_sof_pci snd_sof_xtensa_dsp snd_sof snd_soc_hdac_hda snd_hda_ext_core snd_soc_acpi_intel_match snd_soc_acpi soundwire_bus snd_soc_core snd_hda_codec_hdmi snd_compress ac97_bus
 snd_pcm_dmaengine iTCO_wdt intel_pmc_bxt intel_pmt_telemetry ee1004 mei_hdcp iTCO_vendor_support intel_pmt_class intel_rapl_msr intel_tcc_cooling x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp snd_hda_codec_generic mt7921e ledtrig_audio kvm_intel mt76_connac_lib mt76 nvidia_drm(POE) mac80211 kvm nvidia_modeset(POE) snd_hda_intel snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec snd_hda_core irqbypass nvidia_uvm(POE) intel_cstate snd_hwdep intel_uncore cfg80211 snd_seq snd_seq_device snd_pcm mei_me processor_thermal_device_pci_legacy i2c_i801 processor_thermal_device pcspkr asus_nb_wmi wmi_bmof i2c_smbus libarc4 nvidia(POE) joydev mei idma64 thunderbolt snd_timer processor_thermal_rfim snd processor_thermal_mbox processor_thermal_rapl intel_rapl_common intel_pmt soundcore intel_soc_dts_iosf int3403_thermal int340x_thermal_zone int3400_thermal acpi_tad acpi_thermal_rel acpi_pad asus_wireless zram ip_tables hid_asus asus_wmi sparse_keymap rfkill i915
 hid_multitouch i2c_algo_bit ttm drm_kms_helper sdhci_pci crct10dif_pclmul cqhci crc32_pclmul cec crc32c_intel nvme sdhci nvme_core drm mmc_core ghash_clmulni_intel r8169 ucsi_acpi serio_raw typec_ucsi vmd typec wmi i2c_hid_acpi i2c_hid video pinctrl_tigerlake ipmi_devintf ipmi_msghandler fuse
CR2: 0000000000000000